You will need to build your own mount.
The contour is great out doors in a sunny area, it has poor quality in low light/indoors.
And I used a gun cam for a while. I got a lot of angled floor shots.
Youll get tired quick always walking with your gun pointed up.
Helmet cam is a much better idea. (and contour will do that)
But to each there own.
Sorry wasn't much help with your Q but just giving my personal experiance with it
